Caliper brake

Abstract

A hydraulic caliper brake includes a housing formed by two halves. A pair of bores are provided in each housing half, and a piston is positioned in each bore. An end cap closes off each bore and is sealed by an O-ring positioned around the periphery of each end cap. A ring retains each end cap within each bore. Each housing half has a pair of holes aligned with the holes of the other half. A pair of recessed areas are located on opposing ends of the housing, one of the recessed areas being positioned adjacent to one housing half and the other being positioned adjacent to the other housing half. A pair of stator plates each have a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape. Each ear has a hole therethrough aligned with the holes of the housing halves, and a pin is positioned in the aligned holes. An easily bleedable fluid network supplies fluid to the pistons.

1. A hydraulic caliper brake comprising a housing having a first half, and a second half; a bridge connecting said housing halves; each said housing half having a pair of holes and a pair of bores, an end cap positioned in one end of each of said bores, and a piston positioned within each of said bores, said holes in said first half being axially aligned with said holes in said second half; a fluid chamber in each of said bores; a pair of recessed areas located on opposing ends of said housing, a first of said recessed areas being positioned adjacent said first half of said housing, and a second of said recessed areas being positioned adjacent said second half of said housing; a pair of spaced stators, each having a stator plate including a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape, each said ear having a hole therethrough aligned with said holes in said housing halves; a pin slidably positioned in each of said aligned holes; and a fluid network supplying fluid to each fluid chamber, said network including an inlet port located in one of said housing halves and an outlet port located in said one of said housing halves, a first channel extending through said bridge and in fluid communication with said inlet port and a first of said chambers, a second channel extending through said bridge and in fluid communication said outlet port and a second of said chambers, a third channel connecting said first and second channels and in fluid communication with a third and a fourth of said chambers, said third and fourth of said chambers being located in the other of said housing halves, said first and second of said fluid chambers not being in direct communication with each other. 
   
   
     2. The hydraulic caliper brake of  claim 1 , each of said bores including a circumferential groove, and further comprising an annular seal in contact with each said groove and an outer surface of each said piston. 
   
   
     3. The hydraulic caliper brake of  claim 1 , each said piston having a disc shaped body positioned proximate said end cap and a circumferentially extending flange extending toward, and in contact with, said stator plate. 
   
   
     4. A hydraulic caliper brake comprising a housing having a first half and a second half, each said half having a pair of holes, said holes in said first half being axially aligned with said holes in said second half; a bridge connecting said housing halves; a pair of bores through each of said housing halves, each said bore having a fluid chamber therein; a pair of recessed areas located on opposing ends of said housing, a first of said recessed areas being positioned adjacent said first half of said housing, and a second of said recessed areas being positioned adjacent said second half of said housing; a pair of spaced stators, each having a stator plate including a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape, each said ear having a hole therethrough aligned with said holes in said housing halves; a pin slidably positioned through each of said aligned holes; and a fluid network supplying fluid to each fluid chamber, said network including an inlet port located in one of said housing halves and an outlet port located in said one of said housing halves, a first channel extending through said bridge and in fluid communication with said inlet port and a first of said chambers, a second channel extending through said bridge and in fluid communication said outlet port and a second of said chambers, a third channel connecting said first and second channels and in fluid communication with a third and a fourth of said chambers, said third and fourth of said chambers being located in the other of said housing halves, said first and second of said fluid chambers not being in direct communication with each other. 
   
   
     5. The hydraulic caliper brake of  claim 4 , said pins having equal lengths and diameters. 
   
   
     6. The hydraulic caliper brake of  claim 5 , said pins having a cotter pin inserted therethrough at each end to secure said pins in said holes. 
   
   
     7. A hydraulic caliper brake comprising a housing having a first half and a second half; a bridge connecting said housing halves; a pair of bores through each of said housing halves, each said bore having a fluid chamber therein; a piston in each said fluid chamber; and a fluid network supplying fluid to each said fluid chamber, said network including an inlet port located in one of said housing halves and an outlet port located in said one of said housing halves, a first channel extending through said bridge and in fluid communication with said inlet port and a first of said chambers, a second channel extending through said bridge and in fluid communication said outlet port and a second of said chambers, a third channel connecting said first and second channels and in fluid communication with a third and a fourth of said chambers, said third and fourth of said chambers being located in the other of said housing halves, said first and second of said fluid chambers not being in direct communication with each other. 
   
   
     8. The hydraulic caliper brake of  claim 7 , said third channel being a cross channel extending in a direction substantially perpendicular to both said first and second channels. 
   
   
     9. A hydraulic caliper brake comprising a housing having a first half and a second half; a bridge connecting said housing halves; a pair of holes in each of said housing halves, said holes in said first half being axially aligned with said holes in said second half; a pair of bores through each of said housing halves; a recessed area located at each end of said housing, a first of said recessed areas being positioned adjacent said first half of said housing, and a second of said recessed areas being positioned adjacent said second half of said housing; a pair of spaced stators each having a stator plate including a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape, each ear having a hole therethrough aligned with said holes in said housing halves; a pin slidably positioned through said aligned holes; a piston positioned within each of said bores; an end cap positioned within each of said bores; an O-ring positioned around the periphery of each said end cap; a ring to retain each said end cap within said bores; a fluid chamber in each of said bores between said end caps and said pistons; and a fluid network supplying fluid to each fluid chamber, said network including an inlet port located in one of said housing halves and an outlet port located in said one of said housing halves, a first channel extending through said bridge and in fluid communication with said inlet port and a first of said chambers, a second channel extending through said bridge and in fluid communication said outlet port and a second of said chambers, a third channel connecting said first and second channels and in fluid communication with a third and a fourth of said chambers, said third and fourth of said chambers being located in the other of said housing halves, said first and second of said fluid chambers not being in direct communication with each other.